https://www.cnbc.com/2017/11/27/essential-phone-on-sale-at-amazon-for-399-for-cyber-monday.html

The Essential phone is just $399 from Amazon on Monday and includes a 4K 360-degree camera attachment that normally costs $199.

If you're unfamiliar, the Essential phone was launched by the founder of Android, Andy Rubin, earlier this year. The phone was initially priced at $699 but was quickly discounted. Reports have suggested the phone hasn't been selling well, so these new price points might help Essential increase its consumer base.